{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Alteration of prolyl oligopeptidase and activated alpha - 2 - macroglobulin in multiple sclerosis subtypes and in the clinically isolated syndrome ."}
{"Chemical": ["prolyl"]}